Description
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Selling Title
Rare Gagaticeras gagateanum Ammonite Fossil Sinemurian Jurassic Robin Hoods Bay UK
Rare Gagaticeras gagateanum Ammonite Fossil Sinemurian Jurassic Robin Hoods Bay Yorkshire United Kingdom
Long Description
Rare Gagaticeras gagateanum Ammonite Fossil from Robin Hoods Bay, Yorkshire
This rare Gagaticeras gagateanum ammonite fossil was discovered at Robin Hoods Bay, Yorkshire, United Kingdom, and dates back to the Sinemurian Stage of the Lower Jurassic, around 196–190 million years ago. Ammonites from this stage are particularly significant as they provide vital information for biostratigraphy and marine paleoecology. This specimen has been carefully selected for its preservation and comes with a Certificate of Authenticity, ensuring that it is 100% genuine.
Geological Context
- Geological Period: Jurassic
- Stage: Lower Jurassic, Sinemurian
- Age: Approximately 196–190 million years old
- Provenance: Robin Hoods Bay, Yorkshire, UK
Robin Hoods Bay is one of the most celebrated fossil localities in Britain. The cliffs and foreshore exposures are part of the famous Yorkshire Coast, renowned for its Lower Lias deposits. These rocks preserve a rich marine ecosystem that thrived during the early Jurassic, including ammonites, belemnites, marine reptiles, and bivalves. Fossils from this locality have been collected and studied since the early 19th century, contributing greatly to the science of paleontology.
Scientific Classification
- Kingdom: Animalia
- Phylum: Mollusca
- Class: Cephalopoda
- Order: Ammonitida
- Superfamily: Eoderoceratoidea
- Family: Polymorphitidae
- Genus: Gagaticeras
- Species: Gagaticeras gagateanum
This ammonite species is a key indicator within the Sinemurian and is particularly valued as an index fossil. Its presence allows geologists to correlate rock sequences across Europe with accuracy.
Morphological Features
This specimen shows the typical characteristics of Gagaticeras gagateanum:
- Evolute coiling, where all whorls are clearly visible.
- Fine ribbing extending across the flanks, producing a visually striking ornamentation.
- A moderately compressed shell with strong rib structures that may bifurcate toward the outer whorl.
- A keel running along the venter, typical of the genus and enhancing its hydrodynamic efficiency.
The ornate ribbing and open whorls made these ammonites distinct, both functionally and aesthetically, and today they are highly sought after by collectors.
Scientific Importance
The Sinemurian ammonite faunas are essential for defining biozones, and Gagaticeras gagateanum plays an important role in correlating strata. Ammonites such as this were free-swimming cephalopods, closely related to modern squid and octopuses, and their global distribution makes them invaluable in understanding the marine conditions of the Early Jurassic seas.
Key Details
- Species: Gagaticeras gagateanum
- Age: Sinemurian Stage, Lower Jurassic (196–190 million years)
- Locality: Robin Hoods Bay, Yorkshire, UK
- Authenticity: Guaranteed genuine with Certificate of Authenticity
- Scale: 1cm cube shown in photos for size reference
Collectability and Display Value
This is not just a fossil, but a rare and scientifically valuable ammonite from a world-renowned fossil locality. Specimens of Gagaticeras gagateanum from Robin Hoods Bay are particularly prized due to the historic importance of the region in the study of geology and paleontology. Its distinctive ribbing and classic Sinemurian morphology make it a superb addition to any fossil collection.
This is the exact specimen you will receive, chosen for its display quality and authenticity. Whether as part of a serious collection, an educational piece, or a unique natural history display, this ammonite fossil connects you directly to the rich marine world of the Early Jurassic seas.
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